Woods Gonzalez & Woods Chapter 7 Wavelets and Multiresolution Processing... Woods Gonzalez & Woods Chapter 7 Wavelets and Multiresolution Processing... Woods Gonzalez & Woods Chapter 7 W
Trang 1Digital Image Processing, 3rd ed.
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© 1992–2008 R C Gonzalez & R E Woods
Gonzalez & Woods
Chapter 7
Wavelets and Multiresolution Processing
Trang 2Digital Image Processing, 3rd ed.
Trang 3Digital Image Processing, 3rd ed.
www.ImageProcessingPlace.com
© 1992–2008 R C Gonzalez & R E Woods
Gonzalez & Woods
Chapter 7
Wavelets and Multiresolution Processing
Trang 4Digital Image Processing, 3rd ed.
Trang 5Digital Image Processing, 3rd ed.
www.ImageProcessingPlace.com
© 1992–2008 R C Gonzalez & R E Woods
Gonzalez & Woods
Chapter 7
Wavelets and Multiresolution Processing
Trang 6Digital Image Processing, 3rd ed.
Trang 7Digital Image Processing, 3rd ed.
www.ImageProcessingPlace.com
© 1992–2008 R C Gonzalez & R E Woods
Gonzalez & Woods
Chapter 7
Wavelets and Multiresolution Processing
Trang 8Digital Image Processing, 3rd ed.
Trang 9Digital Image Processing, 3rd ed.
www.ImageProcessingPlace.com
© 1992–2008 R C Gonzalez & R E Woods
Gonzalez & Woods
Chapter 7
Wavelets and Multiresolution Processing
Trang 10Digital Image Processing, 3rd ed.
Trang 11Digital Image Processing, 3rd ed.
www.ImageProcessingPlace.com
© 1992–2008 R C Gonzalez & R E Woods
Gonzalez & Woods
Chapter 7
Wavelets and Multiresolution Processing
Trang 12Digital Image Processing, 3rd ed.
Trang 13Digital Image Processing, 3rd ed.
www.ImageProcessingPlace.com
© 1992–2008 R C Gonzalez & R E Woods
Gonzalez & Woods
Chapter 7
Wavelets and Multiresolution Processing
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Trang 15Digital Image Processing, 3rd ed.
www.ImageProcessingPlace.com
© 1992–2008 R C Gonzalez & R E Woods
Gonzalez & Woods
Chapter 7
Wavelets and Multiresolution Processing
Downsample by taking every second element
These coefficients correspond to neg n
Trang 16Digital Image Processing, 3rd ed.
Trang 17Digital Image Processing, 3rd ed.
www.ImageProcessingPlace.com
© 1992–2008 R C Gonzalez & R E Woods
Gonzalez & Woods
Chapter 7
Wavelets and Multiresolution Processing
Trang 18Digital Image Processing, 3rd ed.
Trang 19Digital Image Processing, 3rd ed.
www.ImageProcessingPlace.com
© 1992–2008 R C Gonzalez & R E Woods
Gonzalez & Woods
Chapter 7
Wavelets and Multiresolution Processing
Upsampling by adding a 0 every 2nd element
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www.ImageProcessingPlace.com
© 1992–2008 R C Gonzalez & R E Woods
Gonzalez & Woods
Chapter 7
Wavelets and Multiresolution Processing
2D scheme
Trang 22Digital Image Processing, 3rd ed.
www.ImageProcessingPlace.com
Gonzalez & Woods
Chapter 7
Wavelets and Multiresolution Processing
Note that the
Original
2 scales
1 scale
3 scales
Trang 23Digital Image Processing, 3rd ed.
www.ImageProcessingPlace.com
© 1992–2008 R C Gonzalez & R E Woods
Gonzalez & Woods
Chapter 7
Wavelets and Multiresolution Processing
Wavelets - so what now?
As we have done image manipulation (filtering, smoothing, in spatial domain, frequency domain, etc.) it is possible to apply the same tools
in the wavelets formalism.
Trang 24Digital Image Processing, 3rd ed.
the approximation part
Modifying also the
horizontal detail
information
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www.ImageProcessingPlace.com
© 1992–2008 R C Gonzalez & R E Woods
Gonzalez & Woods
Trang 26Digital Image Processing, 3rd ed.